Motor



Aug. 19, 1930. w. E. slMMoNs MOTOR Filed July 2, 1925 4 Sheets-Sheet 1Aug. 19, 1930. w. E. slMMoNs 1,773,635

MOTOR Filed July 2, 1925 4 Sheets-Sheet 2 IN VEN TOR.

` o; 4 1 ATTORNEY Aug. 19, 1930. w. E. slMMoNs MOTOR Filed July 2' 19254 Sheets-Sheet F/SJ. g'gI/ s/VENTOR.

ATTQBN Aug. 19, 1930. w. E. slMMoNs MOTOR Filed July 2, 1925 4Sheets-Sheet 4 l v D INVENToR.

Patented Aug. 19, 1930 UNITED STATES PATENT OFFICE WILLIAM E. SIMMONS,OF OCALA, FLORIDA, ASSIGNOR TO MECHANICAL IMPROVE- MENT CORPORATION, OFOCALA, FLORIDA, A CORPORATION F FLORIDA MOTOR Application led July 2,

This invention is a prime mover of the rotary type.

One of the objects of the invention is to provide an engine capable ofbeing actuated by gas, steam, or other expansive fluids, flowlngliquids, heat or air. A further object is to provide a motor, the numberof moving parts of which are so minimized and so balanced, that inoperation, reciprocations and vibrations are practically eliminated. Afurther object is to provide a motor of the character mentioned,provided with two major Inoving parts, namely, a substantially sphericalrotor to which the impelling force is applied, and a revoluble abutmentdisk movable synchronously with the rotor, 'but on an axis of rotationwhich is at an angle to the axis of rotation of the rotor, A furtherobject is to provide simple means whereby rotation is imparted to theabutment disk through the medium of the spherical rotor. A furtherobject is to provide a motor of the character referred to, in which thespherical rotor is mounted Within a casing having supply and exhaustchambers, the surface of the rotor being so disposed as to form one wallof each of said chambers. A further object is to provide a casing forthe rotor which is provided with an annular chamber or cylinder in whichthe power and scavenger pistons rotate. A further object is to provide acasing having an annular chamber so located as to receive the valve diskand permit its rotation. A further object is to provide improved meansfor receivingr an explosive or impelling mixture and timing thecompression and delivery of the charge to be fired. A further object isto provide a motor of the character mentioned, having a piston of simpleconstruction provided with a storage chamber for compressed explosivemixture, and so constructed as to successively deliver charges of saidcompressed mixture into the liring chambers. isf

The invention will be hereinafter fully set forth and particularlypointed out in the claims.

In the accompanying drawings Figure 1 is a front elevation of a motorconstructed in accordance with the inven- 1925. Serial No. 41,086.

a casing which may be of any suitable dep sign, but as shown is ofgeneral cylindrical shape, provided with laterally disposed tubularbranches 11. The interior of the casing is provided with a centralchamber to receive an approximately spherical body. The casing isprovided with an intake chamber 12, a piston chamber 13, and an exhaustchamber 14, said intake and exhaust chambers being preferably located onopposite sides of said piston chamber. Suitable cooling means isprovided, such as water cooled chambers indicated at 15.

Extending transversely through and diametrically across the internalchamber of the casing 10 is an engine shaft 16, mounted in suitablebearings 17, located within the eX- tensions 11. Mounted on said shaftso .is to rotate therewith is a hollow rotor 18, which consists of anapproximately spherical shell constructed in two parts, and providedwith axial openings through which the shaft 16 extends. Said shaft isprovided with threaded portions 19, engaged bynuts 20, which serve tomaintain the two sections of the rotor in abutted relation. The surfaceof the rotor 18 is so positioned within the casing as to act as one wallfor each of the chambers 12, 13 and 14, respectively. Shims S, locatedbetween the ends of the branches 11 and collars R, attached to saidends, are provided to maintain proper thrust adjustments to insurerevolution of the rotor without undue friction on the casing walls.Suitable packing rings P are also provided.

Projecting radially from the surface of the rotor 18 is the power piston21, which is of a cross section to till the piston chamber 13.

wall, and its front wall is provided with inlet openings normally closedby spring pressed valves 26. The tension of the springs is such as tomaintain the valves 26 closed against the action of centrifugal forcetending to open them.

The exhaust or scavenging piston 27 also projects from the surface ofthe spherical rotor into the piston chamber 13, at a position oppositeto that of the power piston 21. Said exhaust piston is provided withachannel-like outlet 28, which communicates with the conduit 29, leadingthrough the interior of the rotor 18, and discharging into the exhaustchamber 14 through' a suitable opening. Said chamber is also providedwith an exhaust pipe 30.

Explosive mixture is introduced by means of a carbureter C,communicating with the intake chamber 12, and passes thence into theinterior of the rotorl through an opening 31. From the chamber 12 themixture passes into the piston chamber through an opening 32 located inthe wall of the rotor directly back of the scavenging piston 27 It is tobe understood that although the parts just described are designed tooperate as an explosive engine, the invention is not limited to thisparticular method of operation, but may be driven by various otherimpelling forces without departing from the spirit of the invention. i

The abutment disk 34 consists of an approximately flat circular bodyprovided with a central opening to receive the rotor 18, the faces ofsaid disk being arranged on radial lines to produce a. somewhatwedge-shape in cross section.

In practice, the disk* 34 encloses the rotor 18, the axis of rotation ofthe disk being disposed at an angleto theaxis of rotation of the rotor.Any desired angular relation of these parts may be adopted, but forpurposes of illustration the disk is shown as arranged at an approximateangle of 30 to the vertical median line of the rotor.

The disk is rotatably mounted on the rotor 18 as an axis, within acircular chamber 36. An suitable anti-friction means may be provided totake care of the friction due to pressures which tend to force the diskout lof alinement. For purposes of illustration anti-frictionbearings'36 are shown engaging the faces of the disk near its periph-.ery. Projecting inwardly from the edge of the opening in the disk 34,in a radial position, is a stud 37, on which is revolvably mounted aroller 38, located within a curved groove 39, formed in the surface ofthe rotor 18. Said disk is also provided with a transverse opening 40for the passage of the power piston 21, and an oppositely positionedopening 41 for the passageof the exhaust piston 27. Referringparticularly to Figure 3 of the drawings, it will be noted that theradial walls of the openings 40 and 41 are provided with angular faces42, so disposed as to maintain the proper angular relation between eachpiston and its respective opening, as the piston crosses the line oftravel of the disk during operation of the motor.

Surrounding the piston chamber 13, and communicating therewith, are aplurality of firing chambers 43, each provided with a suitable ignitiondevice, such as a spark plug 44. The walls of said firing chambers areso shaped that the force of each explosion is directed into the chamber13 in an approximately tangential line, and diagonally against thepiston 21, so as to secure the maximum impelling e'ect upon said piston.It is to be understood that a suitable timing and ignition system is tobe employed, but as they form no part of the present invention it is notconsidered necessary to show or describe them.

In operation, when the motor is initiall cranked, the rotor 18 isrotated with the shaft 16, and an explosive mixture from the carbureteris drawn into the chamber 12, and.

from thence through the rotor 18 and opening 32 into the piston chamber13. The necessary suction is created by movement of the scavenger piston27, and that portion of the ring 34 which lies back of the piston. Asthe piston 21, passing through the disk 34, enters the mixture filledportion of the chamber 13, the piston 27 passes into the other half ofsaid chamber, the disk 34 serving to prevent leakage after the pistonspass. As the piston 21 travels it cooperates with the disk 34 tocompress the explosive mixture lying ahead of the piston', and as thecompression builds up the valves 26 are unseated, and the compressedmixture is forced into and stored within the chamber 22. After themixturefilled piston 21 passes the abutment disk 34, the dischargeopening 24 directs charges of the explosive mixture successively intothe respective firing chambers 43, and each charge is fired bv theignition device after the ports he pisto providing the suction to drawin the explosive mixture, the iston 27 also serves to scavenge the chamer 13 after each series of explosions, the products of combustionpassing into the channel 28, and thence to the exhaust pipe.

It will be noted that revolution of the rotor 18 by means of theexplosions against piston 2l, will cause said rotor to turn with anddrive the shaft 16. Rotation of the disk 34 is effected by reason of theengagement of the pin 37 and the roller 38 of the disk, projecting intothe groove 39. The relative positions of the parts through a completerevolution are indicated in Figures 4, 5, 6 and 7. Assuming arbitrarilythat the parts are in the positions shown in Figure 6, when the rotorhas travelled 90o the parts are positioned as shown in Figure 7, andafter the rotor moves an additional 90O with respect to Figure 6, theyassume the positions of Figure 8. The parts are so proportioned andtimed that the opening 40 in the disk 34 presents itself in properposition to allow the piston 2l to pass therethrough, the angular faces42 of the walls of the opening compensating for the difference in thedirection of travel of the two parts and maintaining satisfactoryjoints. The same is true with respect to the piston 27 and the opening41.

In Figure 9 the invention is illustrated in a form to be operated bysteam or other expansive fluid. Referring to said figure, the casing10a, spherical rotor 18a and abutment disk 34a are the same as thecorresponding parts illustrated in the other figures. Secured to andprojecting from the face of the rotor are two or more pistons 50, eachpro-- vided in its front face with an exhaust channel 5l communicatingwith a pipe 52, leading through the rotor to a suitable exhaust chamber.Steam or other expansive fluid is introduced by means of a suitablesupply system, indicated at 53, into a steam chamber 54, and from thenceinto the piston chamber 55, through an opening 56. The expansion ot'said fluid against the piston and the abutment disk 34a, impels therotor, the exhaust steam lying ahead of each piston being conducted o'through the channel 51 and the pipe 52.

The advantages of the invention will be readily apparent to thoseskilled in the art to which it belongs. It will be particularly7 notedthat a high powered rotary motor is provided, constructed of a mini-mumnumber of parts, which are so balanced that the operation is practicallyvibrationless. The relation of the parts is such that introduction ofthe impelling force is perfectly timed and maximumpower is provided withminimum losses due to friction and leakage. By mounting the abutmentdisk eccentrically with respect to the axis of rotation of the rotor,the piston chamber is practically divided into two parts, therebyperforming the functions of two chambers, while the pistons are withinthe piston gates of the disk. At all other positions of the pistons, thedisk, by reason of its angular' position, divides the chamber 13 intotwo parts, and the pistons divide into two parts, each of the divisionsproduced by the disk. Thus, the piston chamber is divided into fourseparate chambers, in each of which one cycle of the four cycle gasengine principle is being performed. By utilizing the spherical rotor toprovide the inner walls of the intake, exhaust and piston chambers,respectively, the number of structural parts is materially reduced.Another very important advantage of the spherical shape of the rotor isthat a nice valve lit for the abutment disk is obtained, so that thecentral opening in said disk is always filled by the rotor, no matter atwhat angle the disk may lie with respect to the normal axis of rotationof the rotor. An important advantage is also obtained b making thepiston hollow and providing tliie inlet in the front face and the outletin the top. By means of this arrangement, the explosive mixture which iscompressed in front of the piston is directed into the storage chamberwithin the rotor, the piston serving as a portion of said storagechamber, and the mixture is retained within said chamber until it can bepassed out of the top and be bypassed into the space back of the pistonto be exploded. Thus, a reserve volume of explosive mixture is alwaysmaintained, the vaporization of the mixture reaches the highestattainable degree of perfection, and the compression obtainable atignition is very little less than the peak compression pressure.

While the invention has been described as a prime mover operated by animpelling force, it is not limited to this particular because it may beused as a rotary pump or for other similar purposes without substantialchange. Having thus explained the nature of the invention and describedan operative manner of constructing and using the same, although withoutattempting to set forthall of the forms in which it may be made, or allof the forms of its use, what is claimed is 1. A motor of the characterdescribed comprising a casing having an intake chamber, a pistonchamber, and an exhaust chamber, an

approximately spherical rotor mounted in said casing, the surface ofsaid rotor forming one wall of each of said chambers, a piston on saidrotor, a rotatable abutment disk movable with said rotor but movable onan axis at an angle to the axis of rotation of the rotor, and means forintroducing an im'- pelling medium between the disk and the piston, saiddisk having an opening positioned to periodically coincide withthecrossing line of travel of the piston.

2. A motor of the character described comprising a casing having anintake chamber, a

als

piston chamber, and an exhaust chamber, an approximately spherical rotormounted in said casing, the surface of said rotor forming one wall ofeach of said chambers, an abutment disk rotatably mounted on said rotorand movable, on an axis at an angle to the axis of rotation of therotor, a piston on the rotor, means independent of the piston providinga movable engagement between the disk and the rotor, and means forintroducing an impelling medium between the disk and the piston.

3. A motor of the character described comprising a easing having anintake chamber,

l a oiston chamber, and an exhaust chamber, a

rotatable disk having its peripheral portion engaging said. casing andhaving a central opening, an approximately spherical rotor also mountedwithin said casing and filling the opening. in said disk, the surface ofsaid rotor forming one wall of each of said chambers, means connectingthe disk and the rotor so that rotation is imparted to said disk saidrotor, a piston on the rotor, said disk having an opening positioned toperiodically coincide with the crossing travelof the piston, and meansfor introducing an impelling medium between the disk and the piston.-

4. A motor of the character described comprising a casing, an abutmentdisk rotatably mounted in said casing and having a central openingprovided with an inwardly extended Vradial projection, and a rotor alsomounted in said casing and approximately fitting the opening in saiddisk, the axis of rotation of the disk being at an angle with respect tothe axis of rotation of the rotor, said rotor havlng a recesscomplemental to said projection, a piston on the rotor, and means forintroducing an im elling medium between the disk and the piston.

5. A motor of the character described comprising a casing, a circulardisk having a central openin rovided with an inwardly extending raai)projection, an approximately spherical rotor fitting the opening in saiddisk, said rotor being mounted on an axis disposed at an angle to theaxis of rotation of said disk, said rotor being provided with a curvedrecess in its surface into which said projection extends, anantifriction roll mounted on said projection, a piston on said rotor,and means for introducing an imellling medium between the piston and the6. A motor of the character described comprising a casing having anintake chamber, a piston chamber, and an exhaust chamber, a rotatabledisk having its peripheral portion engaging said casing and having acentral openlng, an approximately spherical rotor fitting said openingbut4 mounted on an axis disposed at an angle to the axis of rotation ofsaid disk, the surface of said rotor forming one wall of each of saidchambers, means connecting the disk and the rotor so that rotation isimparted to said disk by said rotor, a piston on the rotor, said diskhaving a cut away portion to permit passage of the piston therethrough,and means for periodically introducing an impelling medium between thedisk and the piston on both sides ofthe disk.

7. A motor of the charactery described comprising a casing having anintake chamber, a piston chamber, and an exhaust chamber, a rotatabledisk having its peripheral portion engaging said casing and having acentral opening, an approximately spherical rotor filling said opening,and mounted on an axis disposed at an angle to the axis of, rotation ofsaid disk, the surface of said rotor forming one wall of each of saidchambers, means connecting the disk and the rotor so that rotation isimparted to said disk by said rotor, a power piston on said rotor, ascavenger pistonalso on said rotor, said disk having cutaway portionspositioned to periodically coincide with the crossing paths of thepistons, and means for introducing an impelling medium between the diskand the power piston on either side of the disk;

8. A motor of the character described comprising a-casing having anintake chamber, a piston chamber, and an exhaust chamber, a rotatabledisk having its peripheral portion engaging said casing and having acentral opening, an approximately spherical rotor filling said openingand mounted on an axis disposed at an angle to the axis of rotation ofsaid disk, the surface of said rotor forming one wall of each of saidchambers, means connecting the disk and the rotor so that rotation isimparted to said disk by said rotor, a power piston on said rotor, ascavenger piston also on said rotor, said disk having cutaway portionspositioned to permit passage of the pistons when their paths of movementcross that of the disk,.means for introducing an impelling mediumbetween the disk and the power piston on either side of the disk, theradial walls of the cutaway portions of the disk being provided withangular faces so disposed as to maintain the proper angular relationbetween the respective pistons and openings as the parts pass each otherduring their crossing lines of travel.

9. A motor of the character described comprising a casing, a rotatabledisk having its peripheral portion engaging said casing and having acentral opening and an inwardly projected radial finger, anapproximately spherical rotor fitting said opening and prpvided with arecess into which saidfinger projects, so as to cause the two to rotatesimultaneously, the axis of rotation of said rotor being at anangle tothe axis of rotation of said disk, a power piston and a scavengingpiston projecting from said rotor at diametrically opposite positions,said disk havingv radially disposed cut-away portions to provideclearance for the respective pistons during their travel, and means forintroducing an impelling medium between the outer piston and the disk oneither side of the disk.

10. A motor of the character described comprising a casing having anintake chamber, a piston chamber, and an exhaust chamber, an angularlydisposed abutment disk provided with a central opening, bearing meanscarried by said casing and rotatably supporting the periphery of saiddisk, an approximately spherical rotor filling the opening of said disk,the surface of said rotor forming one wall of each of said chambers,means connecting the disk and vrotor to travel simultaneously, a pistonon the rotor, and means introducing an impelling medium between the diskand the piston.

11. A motor of the character described comprising a casing having anintake chamber, a piston chamber, and an exhaust chamber, a shaftrotatably mounted in said casing, a spherical rotor carried by saidshaft, said rotor forming one wall of each of said chambers, an abutmentdisk encircling said rotor and disposed at an angle to said shaft, apiston projecting from said rotor, means independent of the pistonwhereby the disk and the rotor, are connected to travel simultaneously,`and means for introducin an impelling medium between the disk an thepiston.

12. A motor of the character described comprising a casing having anintake chamber, a piston chamber, and an exhaust chamber, a shaftrotatablymounted in said casing, a rotor connected to said shaft, saidrotor forming one wall of each of said chambers, said rotor consistingof two approximately hemispherical complemental parts, means on theshaft holding said parts in assembled elation, a rotatably mountedabutment disk having an opening to receive said rotor, said disk beingdisposed at an angle to said shaft, means whereby the disk and rotor arecaused to travel simultaneously, a piston on the rotor, and means forintroducing an impelling medium between the disk and the piston.

13. A motor of the character described comprising a casing having anintake chamber, a piston chamber, andan exhaust chamber, anapproximately hollow spherical rotor Imounted in said cas1ng, said rotorforming one wallof each o f said chambers, arotatable abutment diskmovable withsaidrotor but at an angle to the axis of rotation of therotor a piston on the rotor'cooperating with said disk, means forintroducing an impelling medium through the rotor into the space betweenthe piston and the disk, and .means for scavenging the motorthrough therotor. Y l l 14. A motor of the character 1 described comprising acasing, an approximately spherical rotor mounted in said casing, arotatable abutment disk encircling said rotor and moved thereby, but atan angle to the axis of rotation thereof, a hollow `piston projectinglfrom the rotor and cooperating with said disk, said piston having aportion for storing compressed explosive mixture, means for supplying animpelling medium to the inte! moved thereby, but at an angle to the axisof rotation thereof, a hollow piston projecting from the rotor andcooperating with sai disk, said piston having a portion for storingcompressed explosive mixture and means for supplying said explosivemixture through the rotor into the space between the piston and thedisk.

16. A motor of the character described comprising a casingfanapproxmatelyspheriv al rotor mounted in said casin a rotatable ahtmentdisk encircling sai rotor and moved thereby but at an anfle to the axisof rotation thereof, a hollow piston constructed to store compressedexplosive mixture, said piston projecting from said rotor and pro-vvided with an outlet port normally closed by said casing, butperiodically uncovered to introduce compressed explosive mixture betweenthe piston and the disk, and means whereby theexplosive mixture issupplied to the interior of said piston.

17. A motor of the character described comprising acasing, anapproximately spherical rotor mounted in said casing, a rotatableabutment disk encircling said ro` tor and moved thereby but at an angleto the axis of rotation thereof, a hollow piston projecting from saidrotor and provided with4 an outlet port normally closed by said casing,means whereby said outlet port is periodically opened and closed duringthe revolation of the rotor so as to control the introduction of animpelling medium between the piston and the disk, the front wall of saidpiston having a relief opening, and a spring,pressed valve normallyclosing said relief. opening.

18. A motor of the character described com isin a casin an a roximatelyspherical rotor, a rotatable abutment disk charges of said explosivemixture into the casing between the piston and the disk.

19. A motor of the character described comprising a casing provided withan annular intake chamber, .an approximately spherical rotor mounted insaid casin and forming one wall of said intake cham er, a rotatableabutment disk encircling said rotor and moved thereby, but at an angleto the axis of rotation thereof, a hollow piston on said rotor, saidpiston having a reserve chamber located within the rotor, so thatcompressed explosive mixture may be introduced into said reserve chamberthrough the piston, means for introducing explosive mixture into thespace ahead of said piston, means whereby said explosive mixture isstored within said iston, and means for periodicallyA establishingcommunication between the interior of said piston and the interior ofthe casing, between the iston and the disk.

20. A motor of t e character described comprising a casing, anapproximately spherical rotor mounted therein, a rotatable diskencircling said rotor and moved thereby but at an angle to the axis ofrotation thereof, means applying an impelling medium to impart movementto said rotor and said disk, a 'scavenging piston projecting from saidrotorA and provided with an outlet channel in its forward face, andmeans for placing said channel in communication with the atmosphere.

21'. A motor ofthe character described comprising a casing, anapproximately spherical rotor mounted." therein, a rotatable abutmentdisk encircling said rotor 4and moved thereby but at an vangle to theaxis of rotation thereof, means for impelling the rotor and they disk, ascavenging'piston having an outlet channel in its forward face, and anexhaust conduit located within the rotor and communicating with saidchannel.

22. A motor of the character described comprising a casing provided withan exhaust chamber, an approximately spherical rotor mounted in saidcasing, arotatable abutment disk encircling said rotor and moved therebyat an angle to the axis of rotation thereof, means for impartingmovement to the rotor and the disk, a scavenging piston having an outletchannel, and means for maintainin communication between said channel Aansaid exhaust chamber.

23. A motor of the character described comprising a casing, having anintakechamber and an exhaust chamber normally closed by the surface ofsaid rotor, an approximately spherical rotor mounted in said casing andnormally closing said chambers, a rotatably mounted disk encircling saidrotor and moved thereb at an angle to the axis of rotation therewith, ahollow power piston projecting from the rotor, means for introducing animpelling medium -into the casing, said piston having means for storingsaid impelling force, means for periodically discharging said impellingmedium from said piston between it and the disk, a scavenging pistonprojecting from said rotor and provided with an outlet conduit, andmeans for establishing communication between said conduit and saidexhaust chamber.

24. A motor of the character described comprising a casing provided witha piston chamber, an approximately spherical rotor mounted therein andprovided with an outlet port, a rotatable disk encircling said rotor andmoved thereby but at an angle to the axis of rotation thereof, animpelling piston, a scavenging piston contiguous'to said outlet port,and means for introducing an impelling medium into said piston chamberthrough said inlet port.

25. A motor of the character described comprising a plurality of firingchambers, an approximately spherical rotor .mounted in said casing, arotatable abutment disk encircling said rotor and movable therewith, but

at an angle to the axis of rotation thereof, a

hollow piston projecting from said rotor, means for periodicallyintroducin of explosive mixture through said piston into the respectivefiring chambers, and means for firing the charges.

26. A motor of the character described comprising a casing provided witha lurality of firing chambers, an approximate y spherical rotor mountedin said casing,- a rotatable abutment disk encircling said rotor andcharges moved thereby, but at an angle to the axis of rotation thereof,a hollow piston projecting from said rotor, said piston having anopening normally closed bythe casing, but uncovered when it comesopposite the respective tiring chambers during revolution of the rotor,whereby charges of explosive mixture a're introduced into said firingchambers, and means in the firing chambers for firing the charges. I

27. A xotor of the character described comprising a casing` providedwith a plurality of firing chambers, an approximately spherical rotormounted in said casing, a rotatable abutment` disk encircling said rotorand moved thereby, but at an angle to the axisof rotation thereof, ahollow'piston projecting from said rotor, said piston having an openingnormally closed by the Wall of the casing, but uncovered when it comesopposite the respective firing chambers, whereby charges of explosivemixture are introduced into said firing chambers, means in the explosionchambers for tiring the'charges, said firing chambers having wallsAshaped to direct the full force of the explosion against the piston inan approximately straight line.

28. A motor of the character described comprising a casing provided witha plurality of firing chambers, an approximately sphero CSlIl ical rotormounted in said casing, a rotatable abutment disk encircling said rotorand moved thereby, but at an angle to the axis of rotation thereof, ahollow piston projecting from said rotor, said piston having an openingnormally closed by the wall of the casing, but uncovered when it comesopposite the respective firing chambers, whereb charges of explosivemixture are introduce into said tiring chambers, and means in the firingchambers for firing the charges.

29. A motor of the character described comprising a casing having alurality of firing chambers, an approximate y spherical rotor mounted insaid casing, a rotatable abutment disk encirclin said rotor and movedthereby, but at an ang e to the axis of rotation thereof, a hollowpiston projecting from said rotor and having a reserve chamber locatedwithin the rotor, means for introducing an ex losive mixture into thereserve chamber t rough said piston, means whereby explosive charges aredelivered by said piston into the respective firing chambers, and meansfor firing said charges.

30. A motor of the character described comprising a casing having aplurality of ring chambers and an intake chamber, an approximatelyspherical rotor mounted in said and forming one wall of the intake chamer, a rotatable abutment disk encircling said rotor and moved thereby,but at an angle thereto, a holow piston projecting from said rotor andprovided with a reserve chamber constructed to periodically delivercharges of explosive mixture into the res ective firing chambers duringrevolution o the rotor, and means for firing said charges.

31. A motor of the characterdescribed comprising a casing provided withindependent intake and exhaust chambers, an a proximately s hericalrotor normally closing the said inta e and exhaust chambers, a rotatableabutment disk encircling said rotor and moved thereby but at an angle tothe axis of rotation thereof, a hollow piston communicating with saidintake chamber, a scavenging piston communicating with said exhaustchamber, means whereby the explosive mixture is first com ressed andthen introduced through the hollow piston into the rin chambers, andmeans for exploding sai charges.

s 32. A rotor of the character described comprising a casing providedwith an explosion chamber, an intake chamber, an exhaust chamber, anapproximately spherical rotor mounted in sai casin and serving as a wallfor each of said chamers, a rotatable abutment disk encircling saidrotor and moved thereby but at an angle to the axis of rotation thereof,whereby the explosion chamber is divided into two parts, pistons on saidrotor projecting into the expl osion chamber, said pistons cooperaingwit said abutment dlsk to divide the explosion chamber into supplementalchambers, and means for introducing an impelling medium between thepiston and m hand.

y WILLIAM E. SIMMONS.

